A camera lens has a power of +1.75D. If the diameter of the lens is 5.7 cm, what is the f-stop of the lens?
Does a single-lens camera produce a real or virtual image? Explain?
A farsighted person has a near point of 38 cm. She holds her book at 25 cm to read, what is the focal length and power of the lens necessary for her to read?
An electron travels at a velocity of 7.5x10^6 m/s through a 0.333 T magnetic field. What is the radius of the electron path?
Ag-112 goes through ?-decay then ?- decay, what are the intermediary and final daughter products?
An unknown isotope goes through ?-decay then ?- decay and results in Po-210. What are the initial and intermediary parents?
What are the ranges of temperatures of a glowing object that will result in light within the visual spectrum?
In: Physics
During February 2019 Festus insured his Renault car with Provident. In the previous year, two events had occurred. A car accident which his girlfriend (driving her own car) had suffered a fractured leg as a named driver and which had been declared to the insurers and was settled satisfactorily and secondly, Festus had been convicted for drunk driving and negligent driving. In May 2019 Festus changed his Renault for a BMW and was charged an additional premium. He did not disclose his two convictions and the accident in which his girlfriend was involved. In July 2019 when Festus had an accident on B1 road near Okahandja, the drunk driving and negligent conviction came to light. Is Provident entitled to cancel and not pay out any claim on Festus' policy? Discuss.
In: Operations Management
Semiconductors can become conductive if their temperature is
raised sufficiently to populate
the (empty) conduction band from the highest filled levels in the
valence band. The ratio of
the populations in the highest level of the conduction band to that
of the lowest level in the
conduction band is nconduction/nvalance = gconduction/gvalance
e–ΔE/kT where ΔE is the band gap, which is
0.661 eV for Ge and 5.5 eV for diamond. Assume for simplicity that
the ratio of the
degeneracies is one and that the semiconductor becomes sufficiently
conductive when
nconduction/nvalance = 1.0×10–6. At what temperatures will
germanium and diamond become
sufficiently conductive? Given that the most stable form of carbon
at normal pressures is
graphite and that graphite sublimates near 3700 K, could you heat
diamond enough to make
it conductive and not sublimate it?
In: Chemistry
72 ) MGT 2100 - Final Review- You are expecting the current stock price to increase in the near future. The stock currently trades for $23 per SH. A call option with a price (strike price) of $25 can be purchased for $4.60 per share at this particular time. You have $4,600 to invest.
a) What are your two alternative investment strategies for the $4,600 (one in the stock and the other in call options)? Assume all of this money must be invested in either stock or options for this question.
b) What will your profit ($) for the stock strategy be if the price of the stock on the expiration date is $31 per share?
c) What will your profit ($) to the option strategy be if the price of the stock on the expiration date is $31 per share?
d) What underlying asset price do you break even on the option strategy?
In: Finance
The Tasty Sub Shop Case: A business entrepreneur uses simple linear regression analysis to predict the yearly revenue for a potential restaurant site on the basis of the number of residents living near the site. The entrepreneur then uses the prediction to assess the profitability of the potential restaurant site.
And The QHIC Case: The marketing department at Quality Home Improvement Center (QHIC) uses simple linear regression analysis to predict home upkeep expenditure on the basis of home value. Predictions of home upkeep expenditures are used to help determine which homes should be sent advertising brochures promoting QHIC’s products and services. Discuss the difference in the type of prediction in both cases and provide rational of the reasons that these predictions were used.
Discuss the difference in the type of prediction in both cases and provide rational of the reasons that these predictions were used.
In: Statistics and Probability
Donny Delt and Sammy Sigma are students and roommates. They lease a house in a neighborhood near campus. Few students live on the block.
The students do not have large parties, but they often have friends over at night. The friends sometimes play high-volume music in their cars, and sometimes speak loudly when going to and from their cars. Also ,departing late night guests often leave beer cans and fast food wrappers in the street.
Neighbors complain about being awakened in the wee hours of the morning. They are considering filing a nuisance lawsuit against Donny and Sammy. Would such an action be reasonable? Do you think Donny and Sammy are creating a nuisance? If so, why? If not, where is the line- what amount of late night noise does amount to a nuisance?
In: Other
b. increase
c. remain constant
d. decrease
2. the standard for oil internationally is that a barrel of oil is always priced in terms of U.S. dollars no matter where it is sold. Suppose that, after a recent OPEC meeting, the price of a barrel of oil rises. Everything else held constant, this would cause the U.S. dollar to _____ against the currencies of oil exporting countries.
a. remain constant
b. either appreciate, depreciate, or remain constant
c. depreciate
d. appreciate
In: Economics
Scenario 2
Skin Integrity and Wound Care (C/S 29-30)
A 68-year-old woman admitted in the female surgical unit, is found to have a Stage II pressure ulcer located on her right buttock near the trochanter area. The patient sustained a fractured right femur and weighs 60 pounds over her ideal body weight. The patient also is incontinent and wears a diaper.
Please help me with this writing, and I want it on a Word file for easy portability
In: Nursing
Suppose a uniformly charged (with a linear charge density z) wire starts at point 0 and rises vertically along the positive y axis to a length z.
A)
Determine the x-component of the electric field Ex at point (x,0). That is, calculate E? near one end of a long wire, in the plane perpendicular to the wire.
Express your answer in terms of the variables l, z, x, and appropriate constants.
B)
Determine the y-components of the electric field Ey at point (x,0). Assume x>0.
Express your answer in terms of the variables l, z, x, and appropriate constants.
C) If the wire extends from y=0 to y= infinity , so that l=infinity, show that E? makes a 45? angle to the horizontal for any x.
In: Physics
According to the article "Are Babies Normal?" by Traci Clemons and Marcello Pagano published in The American Statistician, Vol. 53, No. 4, pp. 298-302, the birth weights of babies are normally distributed with a mean of 3306 grams and a standard deviation of 586 grams.
What is the probability that a randomly selected baby weighs between 3200 grams and 3700 grams? Round your answer to 4 decimal places.
What is the probability that the average weight of 21 randomly selected babies is between 3200 grams and 3700 grams? Round your answer to 4 decimal places.
Why did the probability increase?
A)The probability increased since the sample size increased and the distribution of sample means is more spread out.
B)The probability increased since the sample size increased and the sample means are more concentrated near the mean of 3306.
In: Statistics and Probability